Engine



` (No Model.)

4 Sheets-Sheet 1.

P. HONIGMANN. AIP. GOMPRBSSING ENGINE.

Patented Nov. 13, 1883.

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4 Sheets--Sheet- 2.'

(No Model.)

P. HONIGMANN. AIB. COMPRESSINGfV ENGINE.

Patented NV. 18, 1883.

l No. 288,435.

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(No Model.) 4Sheets-Sheet 3.

4F4. HONIGMANN.

AIR GOMPRESSING ENGINE. No. 288.435. 3 Patented'Nov. 13, 1883.

N. PETERS. Pnowmhogmphr, washingtlm. D. C.

Y 4 Shets-Siheet 4. I'. HONIGMANN. A AIR GOMPRBSSINQ ENGINE.

(NU Model.)

Patented Nov. 13, 1883.

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A ,UN'TTnn STATES FATENT @Trina `l-RIEDRICH HONIGMANN, 'OF AACHEN, GERMANY.

AIR-COMPRESSING ENGINE.

SPECIFICATION forming part of Letters Patent No. 288,425, dated November 13, 18 3.

' Applicaiion filed October 5,1851. (No model.)

` ters of reference marked thereon, in which- Figures l and 2 are elevations, with parts `brokenaway and in section, of my air-com-` l pressor or engine.

Fig. V3 is a cross-section taken on the line x y of Fig. l; and Fig. 4 is a similar section, taken on the line l 2 of Fig. 2, with parts broken away.

This invention pertains to improvements in air-compressors, wherein the air can be compressed to ten or more atmospheres for operating engines, or` for other i analogous purposes; and wherein the compressive force consists of a body of compressed and highlyheated air, which is obtained by means of contrivances substantially as hereinafter more fully set forth and claimed.

In the organization of my invention I employ a generator, within the casing I of which is arranged a series of vertical hot-air pipes,

` E, the lower ends of the latter connecting with and opening through a disk, a', secured within and a short distance above the lower end of said casing, as seen in Fig. 4. The upper `ends of said pipes connect with and open through fa crown-plate or similar disk, a2, disposed in the upper part of the casing, below the pipe-shaped portion a3 of the latter, as seen in Fig. 2.

The generator is connected at its upper end to the pipe-shaped portion c of the cylinder R bythe pipe O, to conduct compressed air from the cylinder to the generator, as will be presently seen.

The pipe c3 of the cylinder R is designed to be connected by the pipe V to a reservoir or reservoirs for storing for future use the compressed air, the latter being permitted to pass, by means of the above arrangement of pipes, partly into the generator and partly into the storing-reservoir.

,The pipe a has a valve, Z, in its upper end, said valve being connected to a lever, Z2, having a weight, Z, whereby is 'caused a certain permanent and invariable pressul i1] Cylinder R, any surplus of air in the latter escaping through the valve Y by the lifting 0f the weight Zf The generator-casing l? is connected at its lower end by the pipe n, and a short distance above its disk or plate a by a pipe, a, to the chamber or cylinder A, within which is arranged a pist-on, C.

rIlhe cylinder R communicates with the chamber A by the passageb and valves 1) and with the atmospheric air by a valve, c, fixed in the top of said chamber.

The cylinder or chamber A is supplied with a hot-air valve, c, and a hot-air-discharge valve, d, both of which are operated (but at different intervals) by eccentrics on the shaft e, the action of the valve d being such as to discharge the air upon the descent of the piston O, while the action of the valve c is con trolled (as explained further on) by the hot air when the piston has reached its lowest position. These valves c d communicate with the pipes n. n, respectively.

The pipe a is connected to or furnished with a supplementary heating-chamber, F.

The portion of compressed air admitted to the pipes E of the generator, in passing down through said pipes is heated, and passes there from to `and through the pipe n', and through the Valve c, and, acting expansively upon the piston C, imparts upward movement to the latter, which causes the compression of the previously-admitted air to the cylinder or chamber A above the piston, and the forcing of the air into the cylinderItthroughthe valve b and passage b. portion of its compressed air displaced by the inrushing air from the chamber A, caused by the ascent of the piston, passes partly into the generator for immediate use and partly into the abovereferred-to reservoir for storage for future use. The hot air, after exhausting its force upon and causing the elevation of the piston, passes from the chamber A through the Valve d into the pipe n, wherein it is reheated by the heater F, whence it passes into the casing P (but not into the pipes E) of the generator, from which it is exhausted through the outlet g at the top of the generator; or the hot air may be passed directly from the piston- From the cylinder R that IOO cylinder to the outside. The return of the hot air in a reheated state through the generator has the effect to augment the heating capacity of the primary heating surfaces or pipes E.

The pistonis connected to the crank p of the iiy-wheel H, and motion is communicated to the shaft e by means of two sets of beveledgear wheels, fj" and t' t, and the vertical shaft h from the driving-shaft H2, on which the iiywheel H is keyed, the vertical shaft It passing through the tube 7.', situated in the center of the cylinder It.

The operation of the engine is as followsz The piston C, during its downward stroke, draws into the cylinder A a quantity ofair by the suction action of the valve a, and at the same time discharges air through the valve d, which is opened by its eccentric on the shaft e as soon as the piston is at the end of its upstroke and begins to descend. Vhen the piston has arrived at its lowest position, the admission-valve 0 is thrown open by its eccentric on the shaft e, as shown; or it can be opened by the direct action of the piston, and through this valve c compressed and highly-heated air is forced into the piston-cylinder, driving the piston upward. Quickly thereafter the valve is closed by the action of the eccentric and shaft, and the air by its expansive force drives the piston up to its highest position. The driving-air, having lost its force by eX- pansion, escapes by the valve d.

From the foregoing it will be seen that during each stroke of the piston there will be supplied to the piston-cylinder a quantity of air equal to the difference in bulk of cold air pumped into the compressed-air cylinder R and the small quantity of air withdrawn from the said latter cylinder, to be heated to that degrec that it will have a superpressure to the air contained in the compressed-air cylinder.

I propose sometimes to use a second piston- 'cylinder, as shown in the drawings, it being essaies Having thus fully described my invention, i

what I claim, and desire to secure by Letters Patent, is-

1. The combination, with the piston-cylinder, with its cold-air induction and eduction valves, cold-air passage, and piston, of the compressed-air cylinder, the generator or heater connected by a pipe to the latter cylinder, and having a series of hot-air pipes, the hot-air-pipe connection between the lower end of generator and the piston-cylinder, and hotair valves arranged in the bottom of the piston-cylinder, and in communication with the hot-air pipes, substantially as and for the purpose specified.

2. rI`he combination, with the piston-cylinder,'with its induction and eduction valves, coldair passage, and piston, of the compressed-air cylinder, the heater or generator having hot-air pipes and a pipe-connection with the latter cylinder, the hot-air valves in the bottom of the piston-cylinder, and the hot-air pipes, one. communicating with the hot-air-supply valve and connected to the lower end of the regenerator, and the other communicating with the hot-air-discharge valve and the chamber surrounding the hotair pipes of the regenerator, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRIEDRICH HUNIGMANN.

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